#181549#181549

#181549 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.8% C 0.093 H 279.2°. Best body text is #FFFFFF at 16.90:1 contrast (WCAG AA passes).

Color values

HEX	#181549
RGB	rgb(24, 21, 73)
HSL	hsl(243, 55%, 18%)
HSV	hsv(243, 71%, 29%)
CMYK	cmyk(67.1%, 71.2%, 0%, 71.4%)
CIE-LAB	lab(10.64, 19.59, -31.98)
CIE-LCH	lch(10.64, 37.51, 301.49°)
OKLab	oklab(23.78% 0.0149 -0.0921)
OKLCH	oklch(23.78% 0.093 279.2)
XYZ	xyz(1.8471, 1.2114, 6.4385)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181549 #464915

analogous

#152C49 #181549 #321549

triadic

#181549 #491815 #154918

tetradic

#181549 #49152C #464915 #154932

square

#181549 #49152C #464915 #154932

split-complementary

#181549 #493215 #2C4915

monochromatic

#080718 #080719 #181549 #282379 #3730A8

Accessibility & contrast

On white

16.90

#181549 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#181549 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181549

16.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181549	#FFFFFF	#000000	##FFFFFF
##181549	1.00	16.90	1.24	16.90
#FFFFFF	16.90	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F4B

Deuteranopia (green-blind)

#001B48

Tritanopia (blue-blind)

#00222C

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #181549;
/* rgb */ color: rgb(24, 21, 73);
/* oklch */ color: oklch(23.8% 0.093 279.2);

Tailwind

colors: {
  custom: {
    50: '#5c527c',
    500: '#181549',
    950: '#000000',
  },
}

SCSS

$custom: #181549;
$custom-light: #5c527c;
$custom-dark: #000000;

JSON

{
  "hex": "#181549",
  "rgb": {
    "r": 24,
    "g": 21,
    "b": 73
  },
  "hsl": {
    "h": 243.462,
    "s": 55.319,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23782,
    "c": 0.09327,
    "h": 279.2
  },
  "luminance": 0.01212
}

Semantic roles & 50–950 ramp

primary

#181549

secondary

#7D8139

accent

#DF49D6

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040209

muted

#79787B

Preview Lab

Preview with #181549

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →